A20% acid solution is mixed with a 70% acid solution to get 50 liters of a 40% solution.
which of the following expressions is equal to 4(50)

a. 0.2x+ 0.7y
b. 2x + 7y
c. x+y

The hawaiian alphabet has 12 letters. how many permutations are posible for each number of letters?

Sarah took the advertising department from her company on a round trip to meet with a potential client. including sarah a total of 11 people took the trip. she was able to purchase coach tickets for $280 and first class tickets for $1280. she used her total budget for airfare for the trip, which was $6080. how many first class tickets did she buy? how many coach tickets did she buy?

For f(x) = 3x+1 and g(x) = x2 - 6, find (g/f)(x)